(a + 5) (a - 5) = a2 - 25
To solve the expression (2(3a + 4) - (a - 6) - (3 - a)^2 + 4(5 - a)), first, distribute and simplify each term. Start by expanding the brackets: (2(3a + 4) = 6a + 8), (- (a - 6) = -a + 6), and (- (3 - a)^2 = - (9 - 6a + a^2) = -9 + 6a - a^2). Combine all the terms, collecting like terms to simplify the expression to its final form.
7(a + 3) = 7*a + 7*3 = 7a + 21
7C MINUS bracket open c plus 2 bracket close equals 7c minus c minus 2 equals 6c minus 2
6
2a+5
To solve the expression (2(3a + 4) - (a - 6) - (3 - a)^2 + 4(5 - a)), first, distribute and simplify each term. Start by expanding the brackets: (2(3a + 4) = 6a + 8), (- (a - 6) = -a + 6), and (- (3 - a)^2 = - (9 - 6a + a^2) = -9 + 6a - a^2). Combine all the terms, collecting like terms to simplify the expression to its final form.
7(a + 3) = 7*a + 7*3 = 7a + 21
7C MINUS bracket open c plus 2 bracket close equals 7c minus c minus 2 equals 6c minus 2
6
2a+5
6xsquared minus 26x minus 5 over 3xsquared minus 15x
2b
3a - 2b
No
2a+6b
86
minus a minus is plus, so it's -8 + 3, which is 3 - 8, or -5